Carbon holding blade



Dec. 6, 1955 L. K. FLEISCHMANN ETAI- 2,725,968

CARBON HOLDING BLADE 2 Sheets-Sheet l Filed Feb. 5, 1955 Dec. 6, 1955 L, K FLElscHMANN ETAL. 2,725,968

CARBON HOLDING BLADE 2 Sheets-Sheet 2 Filed Feb. 5, 1953 Nfjzmsii' T man...

CARBON HOLDING BLADE Lester K. Fleischmann, Highland Park, and Bernard A. Schroeder, Winnetka, Ill., said Schroeder assigner to said Fleischmann Application February 5, 1953, Serial No. 335,356

7 Claims. (Cl. 197-126) This invention relates to carbon holders for use with continuous-form stationery, and more particularly to an improved and simplified arrangement for detachably securing a desired number of carbon blades to a supporting base.

The primary object of the invention is to provide a simplified mounting for the blades which support carbon or transfer material in interleaved relation with continuous-form stationery.

A further object of the invention is to provide slots in the end of the carbon blade so that when the blade is unlocked and moved forwardly, it will make an interlocking pivotal connection with the support so that it can be turned more than ninety degrees from its locked position, to facilitate attachment of a fresh supply of carbon, without being detached from the support.

A further object of the invention is to provide a carbon blade mounting wherein a desired number of carbon blades may be used and the blades may be mounted on the support on either end of the base.

The invention is illustrated in a preferred embodiment in the accompanying drawings, in which- Fig. 1 is a plan view of a device embodying the invention;

Fig. 2 is an end elevational view of the same;

Fig. 3 is a vertical sectional view, taken as indicated at line 3-3 of Fig. l;

Fig. 4 is a fragmentary plan View of the end of one of the blades;

Fig. 5 is a fragmentary plan sectional view, showing how the blade is interlocked in the support;

Fig. 6 is a plan sectional view, taken as indicated at line 6 6 of Fig. 2;

Fig. 7 is a front elevational view of the device;

Fig. 8 is a fragmentary plan sectional view, taken as indicated at line 8-8 of Fig. 7, showing the blade in locked, carbon-holding position;

Fig. 9 is a view similar to Fig. 8, showing the blade unlocked and moved forwardly to engage a pivot member;

Fig. l0 is a view similar to Fig. 9, but showing the blade moved laterally from the position in Fig. 9 preparatory to turning the blade about the pivot member;

Fig. 1l is a View similar to Fig. l0, but showing the blade interlocked with the support and turned to a position to facilitate attachment of fresh carbon to the blade; and

Fig. l2 is a view similar to Fig. 1l, but showing the blade turned substantially more than ninety degrees from the position shown in Fig. 8, so that the blade may be detached entirely from the support.

In the embodiment illustrated, a base member 13 is in the form of a crossbar which may be attached to D. typewriter carriage or similar machine, where it is desired to support carbon paper in interleaved relation with stationery, not shown. A pair of carbon blade supports 14 extend upwardly and are secured to the base portion by cap screws 15.

Each of the supports is provided with a series of par- `nited States Patent f 2,725,968 ce Patented Dec. 6, 195775 allel horizontal slots 16 to receive carbon blades 17. The front of the slots is partially closed by a fixed pivot pin 18.

Each carbon blade 17 is provided with a U-shaped notch 19 which snugly fits the side walls of the support y between the base 13 and the support 14, and its upper end is adapted to snap over a small detent 21 on the top of the support member.

It has been found more convenient in using devices of this type to attach a fresh supply of carbon to the blade while it is turned about ninety degrees from its normal operative position. It is desirable to have the blade remain in its selected slot during that operation, and t0 accomplish that purpose, an L-shaped slot 22 is provided in the front of the blade opposite to the notch 19. The slot is positioned with respect to the notch so that before the notch can be fully disengaged, as shown in Fig. 9,

the L-shaped notch will be engaged by the pivot pin 18.

The sequence of operations is shown in Figs. 8 to 1l. From the locked position in Fig. 8, the locking member 20 is turned down and the blade moved forwardly to the position shown in Fig. 9. The blade is then moved laterally, as shown in Fig. 10, whereupon the blade may be turned freely, as shown in Fig. 1l, while interlocked with the support. After fresh carbon has been applied, the movements are reversed to return the blade to the position shown in Fig. 8. It will be noted that the end of the blade is rounded as indicated at 23, so that there is no danger of disengagement during the turning operation shown in Fig. 11.

If it is desired to remove a blade entirely, it is merely necessary to turn the blade a little more than ninety degrees from its operative position. The curved portion of the blade then clears the rear portion of the slot 16, as shown in Fig. l2, and the blade can be unhooked from the pivot.

The foregoing detailed description is given for clearness of understanding only, and no unnecessary limitations should be understood therefrom, for some modifications will be obvious to those skilled in the art.

We claim:

1. A carbon holder for use with continuous-form stationery, comprising: a base member; a pair of spaced upwardly extending carbon blade supports mounted on said base member, each of said supports having a parallel series of horizontal, rearwardly extending slots; carbon blades positioned in the slots, each blade having at one end a rearwardly open U-shaped notch embracing snugly one of the supports when pushed rearwardly in a selected slot; and a locking member engaging the forward edges of the blades positioned in the slots of each of said supports for releasably holding said blades in their rearmost positions in said slots.

2. A carbon holder for use with continuous-form stationery, comprising: a base member; a pair of spaced upwardiy extending carbon blade supports mounted on said base member, each of said supports having a parallel series of horizontal, rearwardly extending slots; carbon blades positioned in the slots, each blade having at one end a rearwardly open U-shaped notch embracing snugly one of the supports when pushed rearwardly in a selected slot; and an arm on each support for releasably holding the blades positioned in the slots of each of said supports in their rearmost positions in said slots, said arm having one end hinged to the base member and the other end adapted to snap over the top of the support.

3. A carbon holder for use with continuous-form stationery, comprising: a base member; a pair of spaced upwardly extending carbon blade supports mounted on said base member, each of said supports having a, parallel series of horizontal, rearwardly extending slots, and a pivot pin closing the front of each of said slots; carbon blades positioned in the slots, each blade having at one end a rearwardly open U-shaped notch embracing snugly one of the supports when pushed rearwardly in a selected slot and a small forwardly open slot receiving said pivot pin when the blade is released and moved forwardly whereby the blade may be turned forwardly about the pivot pin without being removed from said support; and a locking member on each support for releasably holding the blades positioned in the slots of each of said supports in their rearmost positions in said slots.

4. A carbon holder for use with continuons-form stationery, comprising: a base member; a pair of spaced upwardly extending carbon blade supports mounted on said base member, each of said supports having rearwardly extending slots and being provided near its front end with a pivot member; carbon blades tted in said slots, each blade having near one end a U-shaped notch adapted to tit snugly around the support when pressed rearwardly, and each blade having a forwardly open slot positioned opposite to the notch so that before the notch in the blade can clear its engagement with the rear portion of the support the forwardly open slot in the blade will receive the pivot member on the support; and a locking member for releasably holding the blades positioned in the slots of each of said supports in their rearmost position.

5. A device as specied in claim 4, in which the slot in each of the blades is L-shaped so that any one of the blades may be rotated about the pivot member of a support by moving said blade forwardly and laterally from locked position.

6. A device as specified in claim 4, in which the slot in each of the blades is L-shaped so that any one of the blades may be rotated about the pivot member of a support by moving said blade forwardly and laterally from locked position, and the ends of each of the blades are rounded so as to interlock a blade with the support during rotation of any one of the blades through more than ninety degrees abQut said pivot member.

7. A carbon holder for use with continuous-form stationery, comprising: a base member; an upwardly extending carbon blade support mounted on said base inem ber, said support having a parallel series of horizontal, rearwardly extending slots; oar-bon blades positioned in the slots, each blade having at one end a rearwardly open U-shaped notch embracing snugly the support when pushed rearwardly in a selected slot; and a locking member engaging the forward edges of the blades positioned in the slots of said support for releasably holding said blades in their rearrnost positions in said slots.

References Cited in the tile of this patent UNITED STATES PATENTS 

